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HFA3761 - 400MHz AGC and Quadrature IF Demodulator

Description

PIN 1 2 3 4 5, 6, 7, 8 9 10 11 12 13 14 15 16 17 SYMBOL AGC1_BYP+ AGC1_In+ GND AGC_Sel AGC1_InAGC1_BYPGND LPF_VCC 2V REF LPF_BYP NC NC LPF_RXI_Out LPF_RXQ_Out LPF_Sel1 LPF_Sel0 DESCRIPTION DC feedback pin for AGC amplifier 1.

Requires good decoupling and minimum wire length to a solid signal ground.

Features

  • all the necessary blocks for baseband demodulation of I and Q signals. It has a two stage integrated AGC IF amplifier with 82dB of voltage gain and 76dB of gain control range. Baseband antialiasing and shaping filters are integrated in the design. Four filter bandwidths are programmable via a two bit digital control interface. In addition, these filters are continuously tunable over a ±20% frequency range via one external resistor. To achieve broadband operation, the Local Oscillator frequency in.

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HFA3763 400MHz Quadrature Modulator and AGC
HFA3766 400MHz AGC Quadrature IF Modulator/Demodulator
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Full PDF Text Transcription

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HFA3761 TM Data Sheet July 1999 File Number 4236.4 400MHz AGC and Quadrature IF Demodulator The HFA3761 is a highly integrated baseband converter for quadrature demodulation applications. The HFA3761 400MHz AGC and quadrature IF demodulator is one of the seven chips in the PRISM® full duplex chip set (see Typical Application Diagram). It features all the necessary blocks for baseband demodulation of I and Q signals. It has a two stage integrated AGC IF amplifier with 82dB of voltage gain and 76dB of gain control range. Baseband antialiasing and shaping filters are integrated in the design. Four filter bandwidths are programmable via a two bit digital control interface. In addition, these filters are continuously tunable over a ±20% frequency range via one external resistor.
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